著者

Hiroyuki Kikuchi Keisuke Kuwahara Kosuke Kiyohara Ester Villalonga-Olives Naomi Brewer Abimbola Aman-Oloniyo Pradeep Aggarwal María Clara Restrepo-Méndez Azusa Hara Masako Kakizaki Yuka Akiyama Kazunari Onishi Kayo Kurotani Maho Haseda Shiho Amagasa Isao Oze

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20180184, (Released:2018-10-06)

参考文献数

25

被引用文献数

9

著者

Rachana Manandhar Shrestha Tetsuya Mizoue Zobida Islam Yukino Kawakatsu Hidemi Ito Keiko Wada Chisato Nagata Ling Zha Tetsuhisa Kitamura Ritsu Sakata Takashi Kimura Yumi Sugawara Ichiro Tsuji Ren Sato Norie Sawada Shoichiro Tsugane Yingsong Lin Isao Oze Sarah Krull Abe Manami Inoue

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20220289, (Released:2023-02-25)

参考文献数

39

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Background: While tall stature has been linked to an increase in the risk of colorectal cancer (CRC), its association with cancer in the colorectum and its subsites remains unclear among Asians.Methods: We conducted a pooled analysis of ten population-based cohort studies among adults in Japan. Each study estimated hazard ratios (HRs) and 95% confidence intervals (CIs) for CRC incidence associated with adult height were estimated using Cox proportional hazards regression with adjustment of the same set of covariates were then pooled to estimate summary HRs incidence using random-effect models.Results: We identified 9,470 CRC incidences among 390,063 participants during 5,672,930 person-years of follow-up. Men and women with tall stature had a higher risk of CRC and colon cancer. HRs (95% CI) for CRC, colon cancer, and distal colon cancer (DCC) for the highest versus lowest height categories were 1.23 (1.07–1.40), 1.22 (1.09–1.36), and 1.27 (1.08–1.49), respectively, in men and 1.21 (1.09–1.35), 1.23 (1.08–1.40), and 1.35 (1.003–1.81), respectively, in women. The association with proximal colon cancer (PCC) and rectal cancer was less evident in both sexes.Conclusions: This pooled analysis confirms the link between tall stature and a higher risk of CRC and colon cancer (especially distal colon) among the Japanese and adds evidence to support the use of adult height to identify those at a higher risk of CRC.

著者

Megumi Hara Yuichiro Nishida Keitaro Tanaka Chisato Shimanoe Kayoko Koga Takuma Furukawa Yasuki Higaki Koichi Shinchi Hiroaki Ikezaki Masayuki Murata Kenji Takeuchi Takashi Tamura Asahi Hishida Mineko Tsukamoto Yuka Kadomatsu Keitaro Matsuo Isao Oze Mikami Haruo Kusakabe Miho Toshiro Takezaki Rie Ibusuki Sadao Suzuki Hiroko Nakagawa-Senda Daisuke Matsui Teruhide Koyama Kiyonori Kuriki Naoyuki Takashima Yasuyuki Nakamura Kokichi Arisawa Sakurako Katsuura-Kamano Kenji Wakai

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20210155, (Released:2021-10-16)

参考文献数

49

被引用文献数

6

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Background: Little is known about whether insufficient moderate-to-vigorous physical activity (MVPA) and longer sedentary behavior (SB) are independently associated with estimated glomerular filtration rate (eGFR) and CKD, whether they interact with known risk factors for CKD, and the effect of replacing sedentary time with an equivalent duration of physical activity on kidney function.Methods: We examined the cross-sectional association of MVPA and SB with eGFR and CKD in 66,603 Japanese cohort study in 14 areas from 2004 to 2013. MVPA and SB were estimated using a self-reported questionnaire, and CKD was defined as eGFR<60 mL/min/1.73 m2. Multiple linear regression analyses, logistic regression analyses, and an isotemporal substitution model were applied.Results: After adjusting for potential confounders, higher MVPA and longer SB were independently associated with higher eGFR (Pfor trend MVPA<0.0001) and lower eGFR (Pfor trend SB<0.0001), and a lower odds ratio (OR) of CKD (adjusted OR of MVPA≥20 MET·h/day: 0.76 [95%CI: 0.68–0.85] compared to MVPA<5 MET·h/day) and a higher OR of CKD (adjusted OR of SB≥16 h/day: 1.81 [95%CI: 1.52–2.15] compared to SB<7 h/day), respectively. The negative association between MVPA and CKD was stronger in men, and significant interactions between sex and MVPA were detected. Replacing 1 hour of SB with 1 hour of physical activity was associated with about 3 to 4% lower OR of CKD.Conclusions: These findings indicate that replacing SB with physical activity may benefit kidney function, especially in men, adding to the possible evidence on CKD prevention.

著者

Mako Nagayoshi Asahi Hishida Tomonori Shimizu Yasufumi Kato Yoko Kubo Rieko Okada Takashi Tamura Jun Otonari Hiroaki Ikezaki Megumi Hara Yuichiro Nishida Isao Oze Yuriko N. Koyanagi Yohko Nakamura Miho Kusakabe Rie Ibusuki Keiichi Shibuya Sadao Suzuki Takeshi Nishiyama Teruhide Koyama Etsuko Ozaki Kiyonori Kuriki Naoyuki Takashima Yasuyuki Nakamura Sakurako Katsuura-Kamano Kokichi Arisawa Masahiro Nakatochi Yukihide Momozawa Kenji Takeuchi Kenji Wakai

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20220154, (Released:2023-01-28)

参考文献数

54

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Background: Although many observational studies have demonstrated significant relationships between obesity and cardiometabolic traits, the causality of these relationships in East Asians remains to be elucidated.Methods: We conducted individual-level Mendelian randomization (MR) analyses targeting 14,083 participants in the Japan Multi-Institutional Collaborative Cohort Study, and two-sample MR analyses using summary statistics based on genome-wide association study data from 173,430 Japanese. Using 83 body mass index-related loci, genetic risk scores (GRS) for BMI were calculated, and the effects of BMI on cardiometabolic traits were examined for individual-level MR analyses by the two-stage least squares estimator method. The β-coefficients and standard errors for the per-allele association of each single-nucleotide polymorphism as well as all outcomes, or odds ratios with 95% confidence intervals were calculated in the two-sample MR analyses.Results: In individual-level MR analyses, the GRS of BMI was not significantly associated with any cardiometabolic traits. In two-sample MR analyses, higher BMI was associated with higher risks of higher blood pressure, triglycerides, uric acid, lower high-density-lipoprotein cholesterol and eGFR. The associations of BMI with type 2 diabetes in two-sample MR analyses were inconsistent by different methods, including the directions.Conclusions: The results of this study suggest that, even among the Japanese, an East Asian population with low levels of obesity, higher BMI could be causally associated with the development of a variety of cardiometabolic traits. Causality in those associations should be clarified in future studies with larger populations, especially those of BMI with type 2 diabetes.

著者

Mineko Tsukamoto Asahi Hishida Takashi Tamura Mako Nagayoshi Rieko Okada Yoko Kubo Yasufumi Kato Nobuyuki Hamajima Yuichiro Nishida Chisato Shimanoe Rie Ibusuki Kenichi Shibuya Naoyuki Takashima Yasuyuki Nakamura Miho Kusakabe Yohko Nakamura Yuriko N. Koyanagi Isao Oze Takeshi Nishiyama Sadao Suzuki Isao Watanabe Daisuke Matsui Jun Otonari Hiroaki Ikezaki Sakurako Katsuura-Kamano Kokichi Arisawa Kiyonori Kuriki Masahiro Nakatochi Yukihide Momozawa Kenji Takeuchi Kenji Wakai Keitaro Matsuo

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20220341, (Released:2023-07-29)

参考文献数

72

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Background: The present genome-wide association study (GWAS) aimed to reveal the genetic loci associated with folate metabolites as well as to detect related gene-environment interactions in Japanese.Methods: We conducted the GWAS of plasma homocysteine (Hcy), folic acid (FA), and vitamin B12 (VB12) levels in the Japan Multi-Institutional Collaborative Cohort (J-MICC) Study participants who joined from 2005 to 2012, and also estimated gene-environment interactions. In the replication phase, we used data from the Yakumo Study conducted in 2009. In the discovery phase, data of 2,263 participants from four independent study sites of the J-MICC Study were analyzed. In the replication phase, data of 573 participants from the Yakumo Study were analyzed.Results: For Hcy, MTHFR locus on chr 1, NOX4 on chr 11, CHMP1A on chr 16, and DPEP1 on chr 16 reached genome-wide significance (P < 5×10-8). MTHFR also associated with FA, and FUT2 on chr 19 associated with VB12. We investigated gene-environment interactions in both studies and found significant interactions between MTHFR C677T and ever drinking, current drinking, and physical activity > 33% on Hcy (β = 0.039, 0.038 and -0.054, P = 0.018, 0.021 and < 0.001, respectively) and the interaction of MTHFR C677T with ever drinking on FA (β = 0.033, P = 0.048).Conclusions: The present GWAS revealed the folate metabolism-associated genetic loci and gene-environment interactions with drinking and physical activity in Japanese, suggesting the possibility of future personalized CVD prevention.

著者

Hiroyuki Masaoka Keitaro Matsuo Isao Oze Takashi Kimura Akiko Tamakoshi Yumi Sugawara Ichiro Tsuji Norie Sawada Shoichiro Tsugane Hidemi Ito Keiko Wada Chisato Nagata Tetsuhisa Kitamura Ling Zha Ritsu Sakata Kotaro Ozasa Yingsong Lin Tetsuya Mizoue Keitaro Tanaka Sarah Krull Abe Manami Inoue

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20220085, (Released:2022-10-29)

参考文献数

29

被引用文献数

3

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Background: Although cigarette smoking is an established risk factor for bladder cancer, assessment of smoking impact on bladder cancer in Asian populations has been hindered by few cohort studies conducted in Asian populations. We therefore investigated the risk of bladder cancer associated with smoking status, cumulative smoking intensity and smoking cessation in Japan.Methods: We analyzed data for 157,295 men and 183,202 women in ten population-based cohort studies in Japan. The risk associated with smoking behaviors was estimated using Cox regression models within each study, and pooled hazard ratios (HR) and their 95% confidence intervals (CI) for the incidence of bladder cancer were calculated.Results: During 4,729,073 person-years of follow up, 936 men and 325 women developed bladder cancer. In men, former smokers (HR 1.47; 95% CI, 1.18-1.82) and current smokers (HR 1.96; 95% CI, 1.62-2.38) had higher risk than never smokers. In women, current smokers had higher risk than never smokers (HR 2.35; 95% CI, 1.67-3.32). HRs in men linearly increased with increasing pack-years. Risk decreased with increasing years of smoking cessation in men with a significant dose-response trend. Former smokers with a duration of more than 10 years after smoking cessation had no significantly increased risk compared with never smokers (HR 1.26; 95% CI, 0.97-1.63).Conclusions: Data from a pooled analysis of ten population-based cohort studies in Japan clearly show an association between cigarette smoking and bladder cancer risk. The risk of smokers may approximate that of never smokers following cessation for many years.

著者

Madoka Iwase Yukari Taniyama Yuriko N. Koyanagi Yumiko Kasugai Isao Oze Norikazu Masuda Hidemi Ito Keitaro Matsuo

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20230155, (Released:2024-01-06)

参考文献数

30

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Background: Reproductive factors such as age at menarche are known to be associated with disease risk, but data on trends in these factors in Japan are limited. In this study, we investigated secular trends in reproductive factors and explored their potential association with socioeconomic and historical events.Methods: We conducted a retrospective analysis of 62,005 Japanese women born between 1890 and 1991 using a survey conducted over 25 years. Trends in reproductive factors were analyzed using linear and joinpoint regression models, and their associations with major historical events involving Japan were evaluated.Results: We found that the age at menarche showed a significant downward trend (P-value<0.001) over the century. Three joinpoints were identified, in 1932 (15.23 years old), 1946 (13.48 years old), and 1959 (12.71 years old), which indicated that average age at menarche decreased by approximately 0.8% per year between 1932 and 1946, and then by 0.4% per year between 1946 and 1959, both of which were statistically significant. However, after 1959, age of menarche remained stable. Analyses of other reproductive factors found significant changes, including a decrease in parity and the number of babies breastfed, and an increase in age at first birth.Conclusion: Age at menarche showed a long-term downward trend in Japan, with significant change points in annual percent change. Other factors showed secular changes in trends as well. These change points were observed at the same time as historical events, namely wars and economic development, suggesting that socioeconomic and environmental changes at the population level affect reproductive factors in females.

著者

Hiroyuki Masaoka Keitaro Matsuo Isao Oze Takashi Kimura Akiko Tamakoshi Yumi Sugawara Ichiro Tsuji Norie Sawada Shoichiro Tsugane Hidemi Ito Keiko Wada Chisato Nagata Tetsuhisa Kitamura Ling Zha Ritsu Sakata Kotaro Ozasa Yingsong Lin Tetsuya Mizoue Keitaro Tanaka Sarah Krull Abe Manami Inoue

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.33, no.11, pp.582-588, 2023-11-05 (Released:2023-11-05)

参考文献数

29

被引用文献数

3

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Background: Although cigarette smoking is an established risk factor for bladder cancer, assessment of smoking impact on bladder cancer in Asian populations has been hindered by few cohort studies conducted in Asian populations. Therefore, we investigated the risk of bladder cancer associated with smoking status, cumulative smoking intensity, and smoking cessation in Japan.Methods: We analyzed data for 157,295 men and 183,202 women in 10 population-based cohort studies in Japan. The risk associated with smoking behaviors was estimated using Cox regression models within each study, and pooled hazard ratios (HRs) and their 95% confidence intervals (CIs) for the incidence of bladder cancer were calculated.Results: During 4,729,073 person-years of follow-up, 936 men and 325 women developed bladder cancer. In men, former smokers (HR 1.47; 95% CI, 1.18–1.82) and current smokers (HR 1.96; 95% CI, 1.62–2.38) had higher risk than never smokers. In women, current smokers had higher risk than never smokers (HR 2.35; 95% CI, 1.67–3.32). HRs in men linearly increased with increasing pack-years. Risk decreased with increasing years of smoking cessation in men, with a significant dose-response trend. Former smokers with a duration of more than 10 years after smoking cessation had no significantly increased risk compared with never smokers (HR 1.26; 95% CI, 0.97–1.63).Conclusion: Data from a pooled analysis of 10 population-based cohort studies in Japan clearly show an association between cigarette smoking and bladder cancer risk. The risk of smokers may approximate that of never smokers following cessation for many years.

著者

Daisaku Nishimoto Rie Ibusuki Ippei Shimoshikiryo Kenichi Shibuya Shiroh Tanoue Chihaya Koriyama Toshiro Takezaki Isao Oze Hidemi Ito Asahi Hishida Takashi Tamura Yasufumi Kato Yudai Tamada Yuichiro Nishida Chisato Shimanoe Sadao Suzuki Takeshi Nishiyama Etsuko Ozaki Satomi Tomida Kiyonori Kuriki Naoko Miyagawa Keiko Kondo Kokichi Arisawa Takeshi Watanabe Hiroaki Ikezaki Jun Otonari Kenji Wakai Keitaro Matsuo

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

pp.JE20220354, (Released:2023-11-04)

参考文献数

35

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Background: Improving diets requires an awareness of the need to limit foods for which excessive consumption is a health problem. Since there are limited reports on the link between this awareness and mortality risk, we examined the association between awareness of limiting food intake (energy, fat, and sweets) and all-cause mortality in a Japanese cohort study.Methods: Participants comprised 58,772 residents (27,294 men; 31,478 women) aged 35–69 years who completed baseline surveys of the Japan Multi-Institutional Collaborative Cohort Study from 2004 to 2014. Hazard ratios (HRs) for all-cause mortality and 95% confidence intervals (CIs) were estimated by sex using a Cox proportional hazard model, with adjustment for related factors. Mediation analysis with fat intake as a mediator was also conducted.Results: The mean follow-up period was 11 years and 2,516 people died. Estimated energy and fat intakes according to the Food Frequency Questionnaire were lower in those with awareness of limiting food intake than in those without this awareness. Women with awareness of limiting fat intake showed a significant decrease in mortality risk (HR=0.73; 95% CI, 0.55 to 0.94). Mediation analysis revealed that this association was due to the direct effect of the awareness of limiting fat intake and that the total effect was not mediated by actual fat intake. Awareness of limiting energy or sweets intake was not related to mortality risk reduction.Conclusion: Awareness of limiting food intake had a limited effect on reducing all-cause mortality risk.

著者

Megumi Hara Yuichiro Nishida Keitaro Tanaka Chisato Shimanoe Kayoko Koga Takuma Furukawa Yasuki Higaki Koichi Shinchi Hiroaki Ikezaki Masayuki Murata Kenji Takeuchi Takashi Tamura Asahi Hishida Mineko Tsukamoto Yuka Kadomatsu Keitaro Matsuo Isao Oze Haruo Mikami Miho Kusakabe Toshiro Takezaki Rie Ibusuki Sadao Suzuki Hiroko Nakagawa-Senda Daisuke Matsui Teruhide Koyama Kiyonori Kuriki Naoyuki Takashima Yasuyuki Nakamura Kokichi Arisawa Sakurako Katsuura-Kamano Kenji Wakai

出版者

Japan Epidemiological Association

雑誌

Journal of Epidemiology (ISSN:09175040)

巻号頁・発行日

vol.33, no.6, pp.285-293, 2023-06-05 (Released:2023-06-05)

参考文献数

49

被引用文献数

6

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Background: Little is known about whether insufficient moderate-to-vigorous physical activity (MVPA) and longer sedentary behavior (SB) are independently associated with estimated glomerular filtration rate (eGFR) and chronic kidney disease (CKD), whether they interact with known risk factors for CKD, and the effect of replacing sedentary time with an equivalent duration of physical activity on kidney function.Methods: We examined the cross-sectional association of MVPA and SB with eGFR and CKD in 66,603 Japanese cohort study in 14 areas from 2004 to 2013. MVPA and SB were estimated using a self-reported questionnaire, and CKD was defined as eGFR <60 mL/min/1.73 m2. Multiple linear regression analyses, logistic regression analyses, and an isotemporal substitution model were applied.Results: After adjusting for potential confounders, higher MVPA and longer SB were independently associated with higher eGFR (P for trend MVPA <0.0001) and lower eGFR (P for trend SB <0.0001), and a lower odds ratio (OR) of CKD (adjusted OR of MVPA ≥20 MET·h/day, 0.76; 95% confidence interval [CI], 0.68–0.85 compared to MVPA <5 MET·h/day) and a higher OR of CKD (adjusted OR of SB ≥16 h/day, 1.81; 95% CI, 1.52–2.15 compared to SB <7 h/day), respectively. The negative association between MVPA and CKD was stronger in men, and significant interactions between sex and MVPA were detected. Replacing 1 hour of SB with 1 hour of physical activity was associated with about 3 to 4% lower OR of CKD.Conclusion: These findings indicate that replacing SB with physical activity may benefit kidney function, especially in men, adding to the possible evidence on CKD prevention.

著者

Teruhide Koyama Nagato Kuriyama Etsuko Ozaki Satomi Tomida Ritei Uehara Yuichiro Nishida Chisato Shimanoe Asahi Hishida Takashi Tamura Mineko Tsukamoto Yuka Kadomatsu Isao Oze Keitaro Matsuo Haruo Mikami Yohko Nakamura Rie Ibusuki Toshiro Takezaki Sadao Suzuki Takeshi Nishiyama Kiyonori Kuriki Naoyuki Takashima Aya Kadota Hirokazu Uemura Sakurako Katsuura-Kamano Hiroaki Ikezaki Masayuki Murata Kenji Takeuchi Kenji Wakai for the Japan Multi-institutional Collaborative Cohort (J-MICC) Study Group

出版者

Japan Atherosclerosis Society

雑誌

Journal of Atherosclerosis and Thrombosis (ISSN:13403478)

巻号頁・発行日

pp.54320, (Released:2020-04-08)

参考文献数

35

被引用文献数

6 14

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Aim: Accumulating evidence reveals that sedentary behavior is associated with mortality and cardiometabolic disease; however, there are potential age and sex differences in sedentary behavior and health outcomes that have not been adequately addressed. This study aimed to determine the association of sedentary behavior with cardiometabolic diseases such as hypertension, dyslipidemia, diabetes mellitus, and its risk factors in a large Japanese population according to age and sex. Methods: Using data from the Japan Multi-Institutional Collaborative Cohort Study obtained from baseline surveys, data of 62,754 participants (27,930 males, 34,824 females) were analyzed. This study uses a cross-sectional design and self-administered questionnaires to evaluate sedentary time and anamnesis. For the logistic regression analysis, sedentary time <5 h/day was used as the reference and then adjusted for age, research areas, leisure-time metabolic equivalents, and alcohol and smoking status. From the analysis of anthropometric and blood examinations, 35,973 participants (17,109 males, 18,864 females) were analyzed. Results: For hypertension and diabetes, sedentary time was associated with a significantly higher proportion of male participants. Both sexes were associated with a significantly higher proportion of participants with dyslipidemia. Participants who had longer sedentary time tended to have increased levels of blood pressure, triglycerides, and non-high-density lipoprotein cholesterol (HDL-C), and decreased levels of HDL-C, especially in the 60–69 years group. Conclusions: Independent of leisure-time physical activity, sedentary time was associated with cardiometabolic diseases in a large Japanese population classified by age and sex. Our findings indicate that regularly interrupting and replacing sedentary time may contribute to better physical health-related quality of life.